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Consolidation and Basis of Presentation (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Other Interest and Dividend Income $ 0.3 $ 1.3 $ 0.7 $ 2.5  
Deferred Tax Assets, Net $ 9.1   $ 9.1    
Operating Partnership outstanding units 183,278,698   183,278,698    
General Partners Capital Account Units Owned Percentage 95.10%   95.10%    
Percentage of units outstanding in Heritage OP 4.90%   4.90%    
Limited Partners [Member]          
Operating Partnership outstanding units 9,062,689   9,062,689    
General Partner [Member]          
Operating Partnership outstanding units 174,216,009   174,216,009    
Non-affiliated Partners [Member]          
Percentage of units outstanding in Heritage OP 4.90%   4.90%   5.00%